US3299819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic drive
Assignee: Flo-Mac Inc
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Filing: 1964-12-07
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Granted: 1967-01-24
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Expires: 1984-12-07
Abstract
No abstract record available.
Inventors
- 👤 Lee A Mccoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:35
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/10; H02K49/104; H02K49/108; H02K5/00; H02K5/04; H02K5/12; H02K5/128
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
IN A FLUID-HANDLING APPARATUS OF THE TYPE INCLUDING AN ELECTRIC MOTOR AND A HOUSING HAVING A FLUID CHAMBER, A MAGNETIC DRIVE COMPRISING IN COMBINATION: A ROTATABLE DRIVER MEMBER MOUNTED ON THE SHAFT OF SAID ELECTRIC MOTOR, A BEARING MEMBER FIXEDLY MOUNTED ON SAID HOUSING COAXIALLY WITH SAID SHAFT, A ROTATABLY DRIVEN MEMBER MOUNTED ON SAID BEARING MEMBER, SAID ROTATABLY DRIVEN MEMBER HAVING MEANS FOR IMPARTING MOTION TO THE FLUID BEING HANDLED, EACH OF SAID DRIVER AND DRIVEN MEMBERS COMPRISING A PLURALITY OF WEDGE-SHAPED MAGNETS MOUNTED IN AN ANNULAR DISC-TYPE CONFIGURATION WITH A RADIAL AIR GAP BETWEEN ADJACENT MAGNETS OF EACH MEMBER, EACH OF SAID MAGNETS HAVING A NORTH AND A SOUTH POLE, CONTIGUOUS POLES OF DIFFERENT MAGNETS OPPOSITE-TYPE POLARITY CHARGE, A DIAPHRAGM FIXEDLY MOUNTED ON SAID HOUSING AT A PREDETERMINED DISTANCE BETWEEN SAID DRIVER AND DRIVEN MEMBERS SEPARATING SAID COAXIALLY MOUNTED SHAFT AND BEARING MEMBERS TO KEEP SAID FLUID WITHIN SAID FLUID CHAMBER, AND A THRUST BEARING MOUNTED ON THE SHAFT OF SAID ELECTRIC MOTOR AND SPACED FROM THE CENTRAL PORTION OF THE DISC DURING NORMAL OPERATION TO PREVENT SAID DIAPHRAGM FROM COMING IN CONTACT WITH SAID SHAFT WHILE PERMITTING UNHAMPERED ROTATION OF SAID SHAFT.
Claim 2
Dependent Claim
195 words
IN A FLUID-HANDLING APPARATUS OF THE TYPE INCLUDING AN ELECTRIC MOTOR AND A HOUSING HAVING A FLUID CHAMBER, A MAGNETIC DRIVE COMPRISING IN COMBINATION: A ROTATABLE DRIVER MEMBER MOUNTED ON THE SHAFT OF SAID ELECTRIC MOTOR, A BEARING MEMBER FIXEDLY MOUNTED ON SAID HOUSING COAXIALLY WITH SAID SHAFT, A ROTATABLY DRIVEN MEMBER MOUNTED ON SAID BEARING MEMBER, SAID ROTATABLY DRIVEN MEMBER HAVING MEANS FOR IMPARTING MOTION TO THE FLUID BEING HANDLED, EACH OF SAID DRIVER AND DRIVEN MEMBERS COMPRISING A PLURALITY OF WEDGE-SHAPED MAGNETS MOUNTED IN AN ANNULAR DISC-TYPE CONFIGURATION WITH A RADIAL AIR GAP BETWEEN ADJACENT MAGNETS OF EACH MEMBER, EACH OF SAID MAGNETS HAVING A NORTH AND A SOUTH POLE, CONTIGUOUS POLES OF DIFFERENT MAGNETS OPPOSITE-TYPE POLARITY CHARGE, A DIAPHRAGM FIXEDLY MOUNTED ON SAID HOUSING AT A PREDETERMINED DISTANCE BETWEEN SAID DRIVER AND DRIVEN MEMBERS SEPARATING SAID COAXIALLY MOUNTED SHAFT AND BEARING MEMBERS TO KEEP SAID FLUID WITHIN SAID FLUID CHAMBER, AND A THRUST BEARING MOUNTED ON THE SHAFT OF SAID ELECTRIC MOTOR AND SPACED FROM THE CENTRAL PORTION OF THE DISC DURING NORMAL OPERATION TO PREVENT SAID DIAPHRAGM FROM COMING IN CONTACT WITH SAID SHAFT WHILE PERMITTING UNHAMPERED ROTATION OF SAID SHAFT.
References Cited (Backward Citations)
US2638558A
Cited
US2975713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |